package com.gpf.serverImpl;

import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.gpf.common.SysUserMenu;
import com.gpf.dao.SysMenuDao;
import com.gpf.dao.SysRoleMenuDao;
import com.gpf.dao.SysUserRoleDao;
import com.gpf.exception.ServiceException;
import com.gpf.pojo.Node;
import com.gpf.pojo.SysMenu;
import com.gpf.server.SysMenuService;

import io.micrometer.core.instrument.util.StringUtils;
@Service
public class SysMenuServerImpl implements SysMenuService {

	@Autowired
	private SysMenuDao sysMenuDao;
	@Autowired
	private SysRoleMenuDao sysRoleMenuDao;
	@Autowired
	private SysUserRoleDao sysUserRoleDao;
	@Override
	public List<Map<String, Object>> findObjects() {
		List<Map<String,Object>> list=sysMenuDao.findObjects();
		if(list==null||list.size()==0)
			throw new ServiceException("没有对应的菜单信息");
		return list;
	}
	@Override
	public int deleteObject(Integer id) {
		//1,验证数据的合法性
		if(id==null||id<=0) throw new IllegalArgumentException("请先选择");
		//2,基于id进行子元素查询
		int count = sysMenuDao.getChildCount(id);
		if(count>0) throw new ServiceException("请先删除内部子菜单");
		//3，删除角色，菜单关系数据
		sysRoleMenuDao.deleteObjectByMenuId(id);
		//4,删除菜单元素
		int rows = sysMenuDao.deleteObject(id);
		if(rows==0) throw new ServiceException("此菜单可能已经不存在，请刷新");
		//5，返回结果
		return rows;
	}
	@Override
	public List<Node> findZtreeMenuNodes() {
		List<Node> findZtreeMenuNodes = sysMenuDao.findZtreeMenuNodes();
		return findZtreeMenuNodes;
	}
	@Override
	public int saveObject(SysMenu entity) {
		//1.合法验证
		if(entity==null)
			throw new IllegalArgumentException("保存对象不能为空");
		if(StringUtils.isEmpty(entity.getName()))
			throw new IllegalArgumentException("菜单名不能为空");
		//2.保存数据
		int  rows=sysMenuDao.insertObject(entity);
		//3.返回数据
		return rows;
	}
	@Override
	public int updateObject(SysMenu entity) {
		//1.合法验证
		if(entity==null)throw new ServiceException("保存对象不能为空");
		if(StringUtils.isEmpty(entity.getName()))throw new ServiceException("菜单名不能为空");
		//2.更新数据
		int rows=sysMenuDao.updateObject(entity);
		if(rows==0)throw new ServiceException("记录可能已经不存在");
		//3.返回数据
		return rows;
	}
	@Override
	public List<SysUserMenu> findUserMenusByUserId(Integer id) {
		//1.对用户id进行判断
		//2.基于用户id查找用户对应的角色id
		List<Integer> roleIds=sysUserRoleDao.findRoleIdsByUserId(id);
		//3.基于角色id获取角色对应的菜单信息,并进行封装.
		List<Integer> menuIds=sysRoleMenuDao.findMenuIdsByRoleIds(roleIds);
		//4.基于菜单id获取用户对应的菜单信息并返回
		return sysMenuDao.findMenusByIds(menuIds);
	}
}
